JEE 7 is now a days in very much in demand.....

Here are some hot topics which really useful regarding JEE 7 facts....

Java EE 7 (JSR 342)

• The main theme is to easily run applications on private or
  public clouds
• The platform will define application metadata descriptor to
  describe PaaS execution environment such as multi-tenancy,
  resources sharing, quality-of-service, and dependencies between
  applications
• Embrace latest standards like HTML5, WebSocket, JSON and have
  a standards-based API for each one of them
• Remove inconsistencies between Managed Beans, EJB, Servlets,
  JSF, CDI, and JAX-RS
• Possible inclusion of JAX-RS 2.0 in the Web Profile, revised
  JMS 2.0 API
• Technology Refresh for several existing technologies (more on
  this below) and possible inclusion of Concurrency Utilities for
  Java EE (JSR 236) and JCache (JSR 107)